File:  [Qemu by Fabrice Bellard] / qemu / d3des.c
Revision 1.1.1.2 (vendor branch): download - view: text, annotated - select for diffs
Tue Apr 24 16:50:14 2018 UTC (22 months ago) by root
Branches: qemu, MAIN
CVS tags: qemu0125, qemu0124, qemu0123, qemu0122, qemu0121, qemu0120, qemu0111, qemu0110, qemu0105, qemu0104, qemu0103, qemu0102, qemu0101, qemu0100, HEAD
qemu 0.10.0

    1: /*
    2:  * This is D3DES (V5.09) by Richard Outerbridge with the double and
    3:  * triple-length support removed for use in VNC.  Also the bytebit[] array
    4:  * has been reversed so that the most significant bit in each byte of the
    5:  * key is ignored, not the least significant.
    6:  *
    7:  * These changes are:
    8:  *  Copyright (C) 1999 AT&T Laboratories Cambridge.  All Rights Reserved.
    9:  *
   10:  * This software is distributed in the hope that it will be useful,
   11:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
   12:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
   13:  */
   14: 
   15: /* D3DES (V5.09) -
   16:  *
   17:  * A portable, public domain, version of the Data Encryption Standard.
   18:  *
   19:  * Written with Symantec's THINK (Lightspeed) C by Richard Outerbridge.
   20:  * Thanks to: Dan Hoey for his excellent Initial and Inverse permutation
   21:  * code;  Jim Gillogly & Phil Karn for the DES key schedule code; Dennis
   22:  * Ferguson, Eric Young and Dana How for comparing notes; and Ray Lau,
   23:  * for humouring me on.
   24:  *
   25:  * Copyright (c) 1988,1989,1990,1991,1992 by Richard Outerbridge.
   26:  * (GEnie : OUTER; CIS : [71755,204]) Graven Imagery, 1992.
   27:  */
   28: 
   29: #include "d3des.h"
   30: 
   31: static void scrunch(unsigned char *, unsigned long *);
   32: static void unscrun(unsigned long *, unsigned char *);
   33: static void desfunc(unsigned long *, unsigned long *);
   34: static void cookey(unsigned long *);
   35: 
   36: static unsigned long KnL[32] = { 0L };
   37: 
   38: static const unsigned short bytebit[8]	= {
   39: 	01, 02, 04, 010, 020, 040, 0100, 0200 };
   40: 
   41: static const unsigned long bigbyte[24] = {
   42: 	0x800000L,	0x400000L,	0x200000L,	0x100000L,
   43: 	0x80000L,	0x40000L,	0x20000L,	0x10000L,
   44: 	0x8000L,	0x4000L,	0x2000L,	0x1000L,
   45: 	0x800L, 	0x400L, 	0x200L, 	0x100L,
   46: 	0x80L,		0x40L,		0x20L,		0x10L,
   47: 	0x8L,		0x4L,		0x2L,		0x1L	};
   48: 
   49: /* Use the key schedule specified in the Standard (ANSI X3.92-1981). */
   50: 
   51: static const unsigned char pc1[56] = {
   52: 	56, 48, 40, 32, 24, 16,  8,	 0, 57, 49, 41, 33, 25, 17,
   53: 	 9,  1, 58, 50, 42, 34, 26,	18, 10,  2, 59, 51, 43, 35,
   54: 	62, 54, 46, 38, 30, 22, 14,	 6, 61, 53, 45, 37, 29, 21,
   55: 	13,  5, 60, 52, 44, 36, 28,	20, 12,  4, 27, 19, 11,  3 };
   56: 
   57: static const unsigned char totrot[16] = {
   58: 	1,2,4,6,8,10,12,14,15,17,19,21,23,25,27,28 };
   59: 
   60: static const unsigned char pc2[48] = {
   61: 	13, 16, 10, 23,  0,  4,  2, 27, 14,  5, 20,  9,
   62: 	22, 18, 11,  3, 25,  7, 15,  6, 26, 19, 12,  1,
   63: 	40, 51, 30, 36, 46, 54, 29, 39, 50, 44, 32, 47,
   64: 	43, 48, 38, 55, 33, 52, 45, 41, 49, 35, 28, 31 };
   65: 
   66: /* Thanks to James Gillogly & Phil Karn! */
   67: void deskey(unsigned char *key, int edf)
   68: {
   69: 	register int i, j, l, m, n;
   70: 	unsigned char pc1m[56], pcr[56];
   71: 	unsigned long kn[32];
   72: 
   73: 	for ( j = 0; j < 56; j++ ) {
   74: 		l = pc1[j];
   75: 		m = l & 07;
   76: 		pc1m[j] = (key[l >> 3] & bytebit[m]) ? 1 : 0;
   77: 		}
   78: 	for( i = 0; i < 16; i++ ) {
   79: 		if( edf == DE1 ) m = (15 - i) << 1;
   80: 		else m = i << 1;
   81: 		n = m + 1;
   82: 		kn[m] = kn[n] = 0L;
   83: 		for( j = 0; j < 28; j++ ) {
   84: 			l = j + totrot[i];
   85: 			if( l < 28 ) pcr[j] = pc1m[l];
   86: 			else pcr[j] = pc1m[l - 28];
   87: 			}
   88: 		for( j = 28; j < 56; j++ ) {
   89: 		    l = j + totrot[i];
   90: 		    if( l < 56 ) pcr[j] = pc1m[l];
   91: 		    else pcr[j] = pc1m[l - 28];
   92: 		    }
   93: 		for( j = 0; j < 24; j++ ) {
   94: 			if( pcr[pc2[j]] ) kn[m] |= bigbyte[j];
   95: 			if( pcr[pc2[j+24]] ) kn[n] |= bigbyte[j];
   96: 			}
   97: 		}
   98: 	cookey(kn);
   99: 	return;
  100: 	}
  101: 
  102: static void cookey(register unsigned long *raw1)
  103: {
  104: 	register unsigned long *cook, *raw0;
  105: 	unsigned long dough[32];
  106: 	register int i;
  107: 
  108: 	cook = dough;
  109: 	for( i = 0; i < 16; i++, raw1++ ) {
  110: 		raw0 = raw1++;
  111: 		*cook	 = (*raw0 & 0x00fc0000L) << 6;
  112: 		*cook	|= (*raw0 & 0x00000fc0L) << 10;
  113: 		*cook	|= (*raw1 & 0x00fc0000L) >> 10;
  114: 		*cook++ |= (*raw1 & 0x00000fc0L) >> 6;
  115: 		*cook	 = (*raw0 & 0x0003f000L) << 12;
  116: 		*cook	|= (*raw0 & 0x0000003fL) << 16;
  117: 		*cook	|= (*raw1 & 0x0003f000L) >> 4;
  118: 		*cook++ |= (*raw1 & 0x0000003fL);
  119: 		}
  120: 	usekey(dough);
  121: 	return;
  122: 	}
  123: 
  124: void cpkey(register unsigned long *into)
  125: {
  126: 	register unsigned long *from, *endp;
  127: 
  128: 	from = KnL, endp = &KnL[32];
  129: 	while( from < endp ) *into++ = *from++;
  130: 	return;
  131: 	}
  132: 
  133: void usekey(register unsigned long *from)
  134: {
  135: 	register unsigned long *to, *endp;
  136: 
  137: 	to = KnL, endp = &KnL[32];
  138: 	while( to < endp ) *to++ = *from++;
  139: 	return;
  140: 	}
  141: 
  142: void des(unsigned char *inblock, unsigned char *outblock)
  143: {
  144: 	unsigned long work[2];
  145: 
  146: 	scrunch(inblock, work);
  147: 	desfunc(work, KnL);
  148: 	unscrun(work, outblock);
  149: 	return;
  150: 	}
  151: 
  152: static void scrunch(register unsigned char *outof, register unsigned long *into)
  153: {
  154: 	*into	 = (*outof++ & 0xffL) << 24;
  155: 	*into	|= (*outof++ & 0xffL) << 16;
  156: 	*into	|= (*outof++ & 0xffL) << 8;
  157: 	*into++ |= (*outof++ & 0xffL);
  158: 	*into	 = (*outof++ & 0xffL) << 24;
  159: 	*into	|= (*outof++ & 0xffL) << 16;
  160: 	*into	|= (*outof++ & 0xffL) << 8;
  161: 	*into	|= (*outof   & 0xffL);
  162: 	return;
  163: 	}
  164: 
  165: static void unscrun(register unsigned long *outof, register unsigned char *into)
  166: {
  167: 	*into++ = (unsigned char)((*outof >> 24) & 0xffL);
  168: 	*into++ = (unsigned char)((*outof >> 16) & 0xffL);
  169: 	*into++ = (unsigned char)((*outof >>  8) & 0xffL);
  170: 	*into++ = (unsigned char)(*outof++	 & 0xffL);
  171: 	*into++ = (unsigned char)((*outof >> 24) & 0xffL);
  172: 	*into++ = (unsigned char)((*outof >> 16) & 0xffL);
  173: 	*into++ = (unsigned char)((*outof >>  8) & 0xffL);
  174: 	*into	=  (unsigned char)(*outof	 & 0xffL);
  175: 	return;
  176: 	}
  177: 
  178: static const unsigned long SP1[64] = {
  179: 	0x01010400L, 0x00000000L, 0x00010000L, 0x01010404L,
  180: 	0x01010004L, 0x00010404L, 0x00000004L, 0x00010000L,
  181: 	0x00000400L, 0x01010400L, 0x01010404L, 0x00000400L,
  182: 	0x01000404L, 0x01010004L, 0x01000000L, 0x00000004L,
  183: 	0x00000404L, 0x01000400L, 0x01000400L, 0x00010400L,
  184: 	0x00010400L, 0x01010000L, 0x01010000L, 0x01000404L,
  185: 	0x00010004L, 0x01000004L, 0x01000004L, 0x00010004L,
  186: 	0x00000000L, 0x00000404L, 0x00010404L, 0x01000000L,
  187: 	0x00010000L, 0x01010404L, 0x00000004L, 0x01010000L,
  188: 	0x01010400L, 0x01000000L, 0x01000000L, 0x00000400L,
  189: 	0x01010004L, 0x00010000L, 0x00010400L, 0x01000004L,
  190: 	0x00000400L, 0x00000004L, 0x01000404L, 0x00010404L,
  191: 	0x01010404L, 0x00010004L, 0x01010000L, 0x01000404L,
  192: 	0x01000004L, 0x00000404L, 0x00010404L, 0x01010400L,
  193: 	0x00000404L, 0x01000400L, 0x01000400L, 0x00000000L,
  194: 	0x00010004L, 0x00010400L, 0x00000000L, 0x01010004L };
  195: 
  196: static const unsigned long SP2[64] = {
  197: 	0x80108020L, 0x80008000L, 0x00008000L, 0x00108020L,
  198: 	0x00100000L, 0x00000020L, 0x80100020L, 0x80008020L,
  199: 	0x80000020L, 0x80108020L, 0x80108000L, 0x80000000L,
  200: 	0x80008000L, 0x00100000L, 0x00000020L, 0x80100020L,
  201: 	0x00108000L, 0x00100020L, 0x80008020L, 0x00000000L,
  202: 	0x80000000L, 0x00008000L, 0x00108020L, 0x80100000L,
  203: 	0x00100020L, 0x80000020L, 0x00000000L, 0x00108000L,
  204: 	0x00008020L, 0x80108000L, 0x80100000L, 0x00008020L,
  205: 	0x00000000L, 0x00108020L, 0x80100020L, 0x00100000L,
  206: 	0x80008020L, 0x80100000L, 0x80108000L, 0x00008000L,
  207: 	0x80100000L, 0x80008000L, 0x00000020L, 0x80108020L,
  208: 	0x00108020L, 0x00000020L, 0x00008000L, 0x80000000L,
  209: 	0x00008020L, 0x80108000L, 0x00100000L, 0x80000020L,
  210: 	0x00100020L, 0x80008020L, 0x80000020L, 0x00100020L,
  211: 	0x00108000L, 0x00000000L, 0x80008000L, 0x00008020L,
  212: 	0x80000000L, 0x80100020L, 0x80108020L, 0x00108000L };
  213: 
  214: static const unsigned long SP3[64] = {
  215: 	0x00000208L, 0x08020200L, 0x00000000L, 0x08020008L,
  216: 	0x08000200L, 0x00000000L, 0x00020208L, 0x08000200L,
  217: 	0x00020008L, 0x08000008L, 0x08000008L, 0x00020000L,
  218: 	0x08020208L, 0x00020008L, 0x08020000L, 0x00000208L,
  219: 	0x08000000L, 0x00000008L, 0x08020200L, 0x00000200L,
  220: 	0x00020200L, 0x08020000L, 0x08020008L, 0x00020208L,
  221: 	0x08000208L, 0x00020200L, 0x00020000L, 0x08000208L,
  222: 	0x00000008L, 0x08020208L, 0x00000200L, 0x08000000L,
  223: 	0x08020200L, 0x08000000L, 0x00020008L, 0x00000208L,
  224: 	0x00020000L, 0x08020200L, 0x08000200L, 0x00000000L,
  225: 	0x00000200L, 0x00020008L, 0x08020208L, 0x08000200L,
  226: 	0x08000008L, 0x00000200L, 0x00000000L, 0x08020008L,
  227: 	0x08000208L, 0x00020000L, 0x08000000L, 0x08020208L,
  228: 	0x00000008L, 0x00020208L, 0x00020200L, 0x08000008L,
  229: 	0x08020000L, 0x08000208L, 0x00000208L, 0x08020000L,
  230: 	0x00020208L, 0x00000008L, 0x08020008L, 0x00020200L };
  231: 
  232: static const unsigned long SP4[64] = {
  233: 	0x00802001L, 0x00002081L, 0x00002081L, 0x00000080L,
  234: 	0x00802080L, 0x00800081L, 0x00800001L, 0x00002001L,
  235: 	0x00000000L, 0x00802000L, 0x00802000L, 0x00802081L,
  236: 	0x00000081L, 0x00000000L, 0x00800080L, 0x00800001L,
  237: 	0x00000001L, 0x00002000L, 0x00800000L, 0x00802001L,
  238: 	0x00000080L, 0x00800000L, 0x00002001L, 0x00002080L,
  239: 	0x00800081L, 0x00000001L, 0x00002080L, 0x00800080L,
  240: 	0x00002000L, 0x00802080L, 0x00802081L, 0x00000081L,
  241: 	0x00800080L, 0x00800001L, 0x00802000L, 0x00802081L,
  242: 	0x00000081L, 0x00000000L, 0x00000000L, 0x00802000L,
  243: 	0x00002080L, 0x00800080L, 0x00800081L, 0x00000001L,
  244: 	0x00802001L, 0x00002081L, 0x00002081L, 0x00000080L,
  245: 	0x00802081L, 0x00000081L, 0x00000001L, 0x00002000L,
  246: 	0x00800001L, 0x00002001L, 0x00802080L, 0x00800081L,
  247: 	0x00002001L, 0x00002080L, 0x00800000L, 0x00802001L,
  248: 	0x00000080L, 0x00800000L, 0x00002000L, 0x00802080L };
  249: 
  250: static const unsigned long SP5[64] = {
  251: 	0x00000100L, 0x02080100L, 0x02080000L, 0x42000100L,
  252: 	0x00080000L, 0x00000100L, 0x40000000L, 0x02080000L,
  253: 	0x40080100L, 0x00080000L, 0x02000100L, 0x40080100L,
  254: 	0x42000100L, 0x42080000L, 0x00080100L, 0x40000000L,
  255: 	0x02000000L, 0x40080000L, 0x40080000L, 0x00000000L,
  256: 	0x40000100L, 0x42080100L, 0x42080100L, 0x02000100L,
  257: 	0x42080000L, 0x40000100L, 0x00000000L, 0x42000000L,
  258: 	0x02080100L, 0x02000000L, 0x42000000L, 0x00080100L,
  259: 	0x00080000L, 0x42000100L, 0x00000100L, 0x02000000L,
  260: 	0x40000000L, 0x02080000L, 0x42000100L, 0x40080100L,
  261: 	0x02000100L, 0x40000000L, 0x42080000L, 0x02080100L,
  262: 	0x40080100L, 0x00000100L, 0x02000000L, 0x42080000L,
  263: 	0x42080100L, 0x00080100L, 0x42000000L, 0x42080100L,
  264: 	0x02080000L, 0x00000000L, 0x40080000L, 0x42000000L,
  265: 	0x00080100L, 0x02000100L, 0x40000100L, 0x00080000L,
  266: 	0x00000000L, 0x40080000L, 0x02080100L, 0x40000100L };
  267: 
  268: static const unsigned long SP6[64] = {
  269: 	0x20000010L, 0x20400000L, 0x00004000L, 0x20404010L,
  270: 	0x20400000L, 0x00000010L, 0x20404010L, 0x00400000L,
  271: 	0x20004000L, 0x00404010L, 0x00400000L, 0x20000010L,
  272: 	0x00400010L, 0x20004000L, 0x20000000L, 0x00004010L,
  273: 	0x00000000L, 0x00400010L, 0x20004010L, 0x00004000L,
  274: 	0x00404000L, 0x20004010L, 0x00000010L, 0x20400010L,
  275: 	0x20400010L, 0x00000000L, 0x00404010L, 0x20404000L,
  276: 	0x00004010L, 0x00404000L, 0x20404000L, 0x20000000L,
  277: 	0x20004000L, 0x00000010L, 0x20400010L, 0x00404000L,
  278: 	0x20404010L, 0x00400000L, 0x00004010L, 0x20000010L,
  279: 	0x00400000L, 0x20004000L, 0x20000000L, 0x00004010L,
  280: 	0x20000010L, 0x20404010L, 0x00404000L, 0x20400000L,
  281: 	0x00404010L, 0x20404000L, 0x00000000L, 0x20400010L,
  282: 	0x00000010L, 0x00004000L, 0x20400000L, 0x00404010L,
  283: 	0x00004000L, 0x00400010L, 0x20004010L, 0x00000000L,
  284: 	0x20404000L, 0x20000000L, 0x00400010L, 0x20004010L };
  285: 
  286: static const unsigned long SP7[64] = {
  287: 	0x00200000L, 0x04200002L, 0x04000802L, 0x00000000L,
  288: 	0x00000800L, 0x04000802L, 0x00200802L, 0x04200800L,
  289: 	0x04200802L, 0x00200000L, 0x00000000L, 0x04000002L,
  290: 	0x00000002L, 0x04000000L, 0x04200002L, 0x00000802L,
  291: 	0x04000800L, 0x00200802L, 0x00200002L, 0x04000800L,
  292: 	0x04000002L, 0x04200000L, 0x04200800L, 0x00200002L,
  293: 	0x04200000L, 0x00000800L, 0x00000802L, 0x04200802L,
  294: 	0x00200800L, 0x00000002L, 0x04000000L, 0x00200800L,
  295: 	0x04000000L, 0x00200800L, 0x00200000L, 0x04000802L,
  296: 	0x04000802L, 0x04200002L, 0x04200002L, 0x00000002L,
  297: 	0x00200002L, 0x04000000L, 0x04000800L, 0x00200000L,
  298: 	0x04200800L, 0x00000802L, 0x00200802L, 0x04200800L,
  299: 	0x00000802L, 0x04000002L, 0x04200802L, 0x04200000L,
  300: 	0x00200800L, 0x00000000L, 0x00000002L, 0x04200802L,
  301: 	0x00000000L, 0x00200802L, 0x04200000L, 0x00000800L,
  302: 	0x04000002L, 0x04000800L, 0x00000800L, 0x00200002L };
  303: 
  304: static const unsigned long SP8[64] = {
  305: 	0x10001040L, 0x00001000L, 0x00040000L, 0x10041040L,
  306: 	0x10000000L, 0x10001040L, 0x00000040L, 0x10000000L,
  307: 	0x00040040L, 0x10040000L, 0x10041040L, 0x00041000L,
  308: 	0x10041000L, 0x00041040L, 0x00001000L, 0x00000040L,
  309: 	0x10040000L, 0x10000040L, 0x10001000L, 0x00001040L,
  310: 	0x00041000L, 0x00040040L, 0x10040040L, 0x10041000L,
  311: 	0x00001040L, 0x00000000L, 0x00000000L, 0x10040040L,
  312: 	0x10000040L, 0x10001000L, 0x00041040L, 0x00040000L,
  313: 	0x00041040L, 0x00040000L, 0x10041000L, 0x00001000L,
  314: 	0x00000040L, 0x10040040L, 0x00001000L, 0x00041040L,
  315: 	0x10001000L, 0x00000040L, 0x10000040L, 0x10040000L,
  316: 	0x10040040L, 0x10000000L, 0x00040000L, 0x10001040L,
  317: 	0x00000000L, 0x10041040L, 0x00040040L, 0x10000040L,
  318: 	0x10040000L, 0x10001000L, 0x10001040L, 0x00000000L,
  319: 	0x10041040L, 0x00041000L, 0x00041000L, 0x00001040L,
  320: 	0x00001040L, 0x00040040L, 0x10000000L, 0x10041000L };
  321: 
  322: static void desfunc(register unsigned long *block, register unsigned long *keys)
  323: {
  324: 	register unsigned long fval, work, right, leftt;
  325: 	register int round;
  326: 
  327: 	leftt = block[0];
  328: 	right = block[1];
  329: 	work = ((leftt >> 4) ^ right) & 0x0f0f0f0fL;
  330: 	right ^= work;
  331: 	leftt ^= (work << 4);
  332: 	work = ((leftt >> 16) ^ right) & 0x0000ffffL;
  333: 	right ^= work;
  334: 	leftt ^= (work << 16);
  335: 	work = ((right >> 2) ^ leftt) & 0x33333333L;
  336: 	leftt ^= work;
  337: 	right ^= (work << 2);
  338: 	work = ((right >> 8) ^ leftt) & 0x00ff00ffL;
  339: 	leftt ^= work;
  340: 	right ^= (work << 8);
  341: 	right = ((right << 1) | ((right >> 31) & 1L)) & 0xffffffffL;
  342: 	work = (leftt ^ right) & 0xaaaaaaaaL;
  343: 	leftt ^= work;
  344: 	right ^= work;
  345: 	leftt = ((leftt << 1) | ((leftt >> 31) & 1L)) & 0xffffffffL;
  346: 
  347: 	for( round = 0; round < 8; round++ ) {
  348: 		work  = (right << 28) | (right >> 4);
  349: 		work ^= *keys++;
  350: 		fval  = SP7[ work		 & 0x3fL];
  351: 		fval |= SP5[(work >>  8) & 0x3fL];
  352: 		fval |= SP3[(work >> 16) & 0x3fL];
  353: 		fval |= SP1[(work >> 24) & 0x3fL];
  354: 		work  = right ^ *keys++;
  355: 		fval |= SP8[ work		 & 0x3fL];
  356: 		fval |= SP6[(work >>  8) & 0x3fL];
  357: 		fval |= SP4[(work >> 16) & 0x3fL];
  358: 		fval |= SP2[(work >> 24) & 0x3fL];
  359: 		leftt ^= fval;
  360: 		work  = (leftt << 28) | (leftt >> 4);
  361: 		work ^= *keys++;
  362: 		fval  = SP7[ work		 & 0x3fL];
  363: 		fval |= SP5[(work >>  8) & 0x3fL];
  364: 		fval |= SP3[(work >> 16) & 0x3fL];
  365: 		fval |= SP1[(work >> 24) & 0x3fL];
  366: 		work  = leftt ^ *keys++;
  367: 		fval |= SP8[ work		 & 0x3fL];
  368: 		fval |= SP6[(work >>  8) & 0x3fL];
  369: 		fval |= SP4[(work >> 16) & 0x3fL];
  370: 		fval |= SP2[(work >> 24) & 0x3fL];
  371: 		right ^= fval;
  372: 		}
  373: 
  374: 	right = (right << 31) | (right >> 1);
  375: 	work = (leftt ^ right) & 0xaaaaaaaaL;
  376: 	leftt ^= work;
  377: 	right ^= work;
  378: 	leftt = (leftt << 31) | (leftt >> 1);
  379: 	work = ((leftt >> 8) ^ right) & 0x00ff00ffL;
  380: 	right ^= work;
  381: 	leftt ^= (work << 8);
  382: 	work = ((leftt >> 2) ^ right) & 0x33333333L;
  383: 	right ^= work;
  384: 	leftt ^= (work << 2);
  385: 	work = ((right >> 16) ^ leftt) & 0x0000ffffL;
  386: 	leftt ^= work;
  387: 	right ^= (work << 16);
  388: 	work = ((right >> 4) ^ leftt) & 0x0f0f0f0fL;
  389: 	leftt ^= work;
  390: 	right ^= (work << 4);
  391: 	*block++ = right;
  392: 	*block = leftt;
  393: 	return;
  394: 	}
  395: 
  396: /* Validation sets:
  397:  *
  398:  * Single-length key, single-length plaintext -
  399:  * Key	  : 0123 4567 89ab cdef
  400:  * Plain  : 0123 4567 89ab cde7
  401:  * Cipher : c957 4425 6a5e d31d
  402:  *
  403:  * Double-length key, single-length plaintext -
  404:  * Key	  : 0123 4567 89ab cdef fedc ba98 7654 3210
  405:  * Plain  : 0123 4567 89ab cde7
  406:  * Cipher : 7f1d 0a77 826b 8aff
  407:  *
  408:  * Double-length key, double-length plaintext -
  409:  * Key	  : 0123 4567 89ab cdef fedc ba98 7654 3210
  410:  * Plain  : 0123 4567 89ab cdef 0123 4567 89ab cdff
  411:  * Cipher : 27a0 8440 406a df60 278f 47cf 42d6 15d7
  412:  *
  413:  * Triple-length key, single-length plaintext -
  414:  * Key	  : 0123 4567 89ab cdef fedc ba98 7654 3210 89ab cdef 0123 4567
  415:  * Plain  : 0123 4567 89ab cde7
  416:  * Cipher : de0b 7c06 ae5e 0ed5
  417:  *
  418:  * Triple-length key, double-length plaintext -
  419:  * Key	  : 0123 4567 89ab cdef fedc ba98 7654 3210 89ab cdef 0123 4567
  420:  * Plain  : 0123 4567 89ab cdef 0123 4567 89ab cdff
  421:  * Cipher : ad0d 1b30 ac17 cf07 0ed1 1c63 81e4 4de5
  422:  *
  423:  * d3des V5.0a rwo 9208.07 18:44 Graven Imagery
  424:  **********************************************************************/

unix.superglobalmegacorp.com